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United States Patent |
6,022,384
|
Taylor
|
February 8, 2000
|
Negative dyes and coloration process using them
Abstract
The present invention relates to a water-soluble reactive dye of the
formula N(Z).sub.3, wherein each Z independently has the formula (III):
##STR1##
wherein m, Q, Y and D are defined in the claims. The present invention
also relates to a process for coloring a substrate that includes applying
to the substrate the water-soluble reactive dye of the above formula at a
pH above 7.
Inventors:
|
Taylor; John Anthony (Manchester, GB)
|
Assignee:
|
Zeneca Limited (London, GB)
|
Appl. No.:
|
256777 |
Filed:
|
February 24, 1999 |
Foreign Application Priority Data
Current U.S. Class: |
8/549; 8/543; 534/635; 534/637; 534/638; 534/809 |
Intern'l Class: |
D06P 001/382 |
Field of Search: |
8/543,549
534/635,637,638,809
|
References Cited
U.S. Patent Documents
4038267 | Jul., 1977 | Sueda et al.
| |
4230852 | Oct., 1980 | Sueda et al.
| |
Foreign Patent Documents |
A1458118 | Dec., 1976 | GB.
| |
1458118 | Dec., 1976 | GB.
| |
Primary Examiner: Einsmann; Margaret
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Parent Case Text
This application is a Continuation of application Ser. No. 09/068,550 filed
on Jun. 8, 1998, now U.S. Pat. No. 5,968,208 which is a 371 of
PCT/GB96/02633 filed Oct. 30, 1996 allowed.
Claims
I claim:
1. A process for the coloration of a substrate comprising applying thereto
at a pH above 7 a water-soluble reactive dye of the formula N(Z).sub.3,
wherein each Z is independently a group of the formula (III):
##STR28##
wherein: m is from 1 to 6;
Q is H or optionally substituted alkyl;
Y is a labile atom or group; and
D is a chromophoric group of the formula
L--N.dbd.N--L.sup.1 --NR.sup.1 --
wherein L is an aryl or heteroaryl group, L.sup.1 is an arylene group and
R.sup.1 is H or C.sub.1-4 alkyl.
2. A process according to claim 1, wherein D is a chromophoric group of the
formula:
##STR29##
wherein X is H or a sulpho group and L and R.sup.1 are as defined in claim
1.
3. The process according to claim 1, wherein D is a chromophoric group of
the formula:
##STR30##
4. The process according to claim 1, wherein the water-soluble reactive dye
is applied to the substrate at a pH above 7 by exhaust dyeing, padding or
printing.
5. A water-soluble reactive dye of the formula N(Z).sub.3, wherein each Z
independently is of the formula (III): wherein:
m is from 1 to 6;
Q is H or optionally substituted alkyl
Y is a labile atom or group; and
D is a chromophoric group of the formula:
L--N.dbd.N--L.sup.1 --NR.sup.1 --
wherein L is an aryl or heteroaryl group, L.sup.1 is an arylene group and
R.sup.1 is H or C.sub.1-4 alkyl.
6. The water soluble reactive dye according to claim 5, wherein D is a
chromophoric group of the formula:
##STR31##
wherein X is H or a sulpho group and L and R.sup.1 are as defined in claim
5.
7. The water-soluble reactive dye according to claim 5, wherein the
water-soluble reactive dye of the formula N(Z).sub.3 is selected from the
group consisting of dyes of the formula:
##STR32##
8. The water-soluble reactive dye according to claim 5, wherein D is a
chromophoric group of the formula
Description
This invention relates to reactive dyes, their preparation and use.
The use of a reactive dyes for colouring cellulosic substrates has been
known for many years. Environmental legislation has lead to stricter
controls on dyehouse effluent, e.g. waters containing salt and unfixed
dye, and effluent disposal now represents a major cost to dyehouses. To
reduce such costs there is a need for reactive dyes which can be used in a
way which produces less effluent, for example dyes having high fixation
efficiency and/or requiring less salt during the fixation process.
Reactive dyes having these properties and the ability to build-up to high
depths of shade would be particularly valuable.
According to the present invention there is provided a process for the
coloration of a substrate comprising applying thereto at a pH above 7 a
water-soluble reactive dye comprising at least three chromophoric groups
linked to a polyamine.
The water-soluble reactive dye preferably comprises 3, 4 or 5, more
preferably 3 or 4, especially 3 chromophoric groups linked to a polyamine.
The chromophoric groups can be different from each other, but they are
preferably identical to each other.
The polyamine to which the chromophoric groups are linked preferably
consists of at least three amino groups, more preferably three to six,
especially three or four amino groups, joined together by optionally
substituted aliphatic groups. The amino groups are preferably attached to
one or two --CH.sub.2 -- groups (as illustrated in --HN--CH.sub.2 -- and
--CH.sub.2 --N(-)--CH.sub.2 --). Preferred polyamines are linear
polyamines, for example of the formula (I), or branched polyamines, for
example of formula (II) wherein each R.sup.1 independently is H or
optionally substituted alkyl, n has a value of 2 to 10, preferably 2 to 6,
more preferably 2, and p has a value of 2 to 6, more preferably 2 or 3:
##STR2##
Reactivity of the dyes is preferably provided by means of a reactive
triazine group linking the chromophoric groups to amino groups in the
polyamine. The reactive triazine group is preferably an s-triazine group
having a labile atom or group at the 2-,4- or 6-position, for example a
group of the formula:
##STR3##
wherein Y is a labile atom or group.
In light of the above preference for amino groups being attached to
--CH.sub.2 -- groups and the chromophoric groups being linked to the
nitrogen atoms by means of reactive triazine groups it is preferred for
the water-soluble reactive dyes to contain at least 3, more preferably 3,4
or 5, especially 3 or 4, more especially 3 groups of the formula (III):
##STR4##
wherein: m is from 1 to 6;
Q is H or optionally substituted alkyl or alkylene;
Y is a labile atom or group; and
D is a chromophoric group.
Preferably m is 2, 3 or 4, more preferably 2 or 3, especially 2.
O is preferably H, C.sub.1-4 -alkyl or C.sub.2-4 -alkylene, more preferably
H, methyl or --CH.sub.2 CH.sub.2 --, especially H or --CH.sub.2 CH.sub.2
--.
As will be understood, when Q is H or optionally substituted alkyl the
chromophoric group D is a chain terminating chromophoric group and when Q
is optionally substituted alkylene then D is a pendent chromophoric group.
Thus a dye comprising three chromophoric groups linked to diethylene
triamine would have two terminating chromophoric groups and one pendent
chromophoric group. When the polyamine is tris(2-aminoethyl)amine the
corresponding dye would have three terminating chromophoric groups and
zero pendent chromophoric groups.
One preferred class of dye, which presents one aspect of the invention, is
of the formula N(Z).sub.3 wherein each Z independently is of the formula
(III) defined above, with the proviso that Q is H or optionally
substituted alkyl, preferably H or C.sub.1-4 -alkyl, especially H.
A second preferred class of dye which may be used in the process is of the
formula (IV):
##STR5##
wherein t is 2, 3 or 4;
r is 3, 4 or5.
q is (t+3)-r; and
Y, R.sup.1, m and D are as hereinbefore defined.
Dyes of formula (III) wherein at least one D is a chromophore other than an
azo chromophore form a further feature of the invention.
R.sup.1 is preferably H or C.sub.1-4 -alkyl, more preferably H.
By a labile atom or group it is meant an atom or group which is bound by a
chemical bond to the triazine nucleus, which atom or group is displaceable
by a hydroxyl group of cellulose under mildly alkaline aqueous conditions
to form a covalent bond between the triazine nucleus and cellulose. As
examples of such atoms or groups there may be mentioned halogen atoms, for
example F and Cl; sulphonic acid groups; thiocyano groups; quaternary
ammonium groups, for example trialkylammonium groups and optionally
substituted pyridinium groups, for example 3- and 4- carboxy pyridinium
groups.
When R.sup.1, Q or an aliphatic group is substituted the substituent is
preferably selected from hydroxy, amino, halo, carboxy and sulpho.
In a preferred embodiment dyes of the invention are tree from --SO.sub.2
CH.dbd.CH.sub.2 groups and groups which are convertible on treatment with
aqueous alkali to --SO.sub.2 CH.dbd.CH.sub.2 groups (e.g --SO.sub.2
CH.sub.2 CH.sub.2 OSO.sub.3 H, --SO.sub.2 CH.sub.2 CH.sub.2 SSO.sub.3 H,
--SO.sub.2 CH.sub.2 CH.sub.2 OPO.sub.3 H and --SO.sub.2 CH.sub.2 CH.sub.2
Cl). Preferably the only reactive groups in dyes of the invention are
reactive triazine groups.
The chromophoric groups preferably each independently comprise an azo,
anthraquinone, phthalocyanine, triphenodioxazine or formazan group.
Preferred azo groups are monoazo and disazo groups. Preferred monoazo
groups are formula L--N.dbd.N--L.sup.1 --NR.sup.1 -- wherein L is an aryl
or heteroaryl group, L.sup.1 is an arylene group and R.sup.1 is as
hereinbefore defined.
It is preferred that each aryl or arylene group independently is a mono- or
di-cyclic aryl or arylene group. Preferred aryl groups are optionally
substituted phenyl and optionally substituted naphthyl, and preferred
arylene groups are optionally substituted phenylene and optionally
substituted naphthylene. Preferred heteroaryl groups are pyridonyl and
pyrazolonyl.
A first preferred monoazo group is of the Formula (2) or salt thereof:
##STR6##
wherein: X is H or sulpho, and
L and R.sup.1 are as hereinbefore defined.
L is preferably optionally substituted phenyl or naphthyl, especially a
phenyl or naphthyl group having at least one sulpho substituent. Further
optional substituents which may be present on L include a halogen atom,
especially chlorine; an alkyl radical, especially C.sub.1-4 -alkyl, more
especially methyl; an acylamino radical, especially acetylamino, benzamido
or sulphonated benzamido; amino; hydroxy; and an alkoxy radical,
especially C.sub.1-4 -alkoxy, more especially methoxy.
As examples of phenyl groups having at least one sulpho substituent there
may be mentioned 2-, 3- or 4-sulphophenyl; 2-sulpho-4-nitrophenyl;
2-sulpho-5-nitrophenyl; 4-sulpho2-methylphenyl; 5-sulpho-2-methylphenyl;
2-sulpho-4-methylphenyl; 5-sulpho-2-methoxyphenyl;
2-sulpho-4-methoxyphenyl; 4-sulpho-2-chlorophenyl;
5-acetamido-2-sulphophenyl; 5-sulpho-2-carboxyphenyl: 2,4-disulphophenyl;
2,5-disulphophenyl; and 3,5-disulphophenyl.
As examples of naphthyl groups having at least one sulpho substituent there
may be mentioned 1 -sulphonaphth-2-yl; 1,5-disulphonaphth-2-yl;
1,5,7-trisulphonaphth-2-yl; 3,6,8-trisuiphonaphth-2-yl;
5,7-disulphonaphth-2-yl; 6-sulphonaphth-2-yl; 4-, 5-, 6, or
7-sulphonaphth-1-yl: 4,8-disulphonaphth-1-yl, 3,8-disulphonaphth-1-yl;
2,5,7-trisulphonaphth-1-yl; and 3,5,7-trisulphonaphth-1 -yl.
Preferred optional substituents which may be present on L.sup.1 are those
mentioned above for L.
In groups of Formula (2), --NR.sup.1 -- is preferably at the 6-, 7- or
8-position, especially the 6- or 8- position. When --NR.sup.1 -- is at the
8-position, it is preferred that X is a sulpho group at the 5- or 6-
position.
A second preferred monoazo group is of the Formula (3) or a salt thereof:
##STR7##
wherein R.sup.3 is H or C.sub.1-4 -alkyl;
R.sup.2 is H, C.sub.1-4 -alkyl, C.sub.1-4 -alkanoyl or optionally
substituted benzoyl, especially benzoyl or sulphobenzoyl, acetyl,
propanoyl, n-butanoyl or iso-butanoyl; and
X and R.sup.1 are as hereinbefore defined.
A third preferred monoazo group is of the Formula (4) or salt thereof:
##STR8##
wherein: pH is an optionally substituted phenyl group, especially
sulphophenyl;
R.sup.4 is CN, CH.sub.3 or carboxy, and
R.sup.1 and X are as hereinbefore defined.
A preferred disazo group is of Formula (5) or salt thereof:
L--N.dbd.N--A--N.dbd.N--B--NR.sup.1 -- (5)
wherein:
A and B are each independently optionally substituted phenylene or
naphthylene: and
R.sup.1 and L are as hereinbefore defined.
It is preferred that B is optionally substituted naphthylene and A is
optionally substituted phenylene. The optional substituents which may be
present on A or B are preferably independently selected from halo,
especially chloro: alkoxy, especially C.sub.1-4 -alkoxy; alkyl, especially
methyl; sulpho; carboxy; hydroxy; amino; acylamino especially as
acetamido, benzamido and sulphonated benzamido, and pyrimidinylamino or
triazinylamino cellulose-reactive groups.
As Examples of groups represented by A and B there may be mentioned
phenylene, 2-methyl-1,4-phenylene, sulphophenylene, ureidophenylene,
7-sulpho-1, 4-naphthylene, 6-sulpho-1,4-naphthylene;
8-sulpho-1,4-naphthylene and 6-hydroxy-4-sulpho-1,5-naphthylene.
A preferred anthraquinone group is of the Formula (6) or a salt thereof:
##STR9##
wherein the anthraquinone nucleus optionally contains a sulphonic acid
group in the 5-, 6-, 7-, or 8-position; V is a divalent organic linking
group, preferably of the benzene series; and R.sup.1 is as hereinbefore
defined.
V is preferably phenylene, diphenylene, or 4,4'-divalent stilbene or
azobenzene radicals which are optionally sulphonated. It is preferred that
V contains one sulphonic acid group for each benzene ring present therein.
A preferred phthalocyanine group is of the Formula (7) or a salt thereof:
##STR10##
wherein Pc is a metallo-phthalocyanine nucleus, preferably copper or
nickel phthalocyanine; each R.sup.1 is as hereinbefore defined; each W
independently is a hydroxy or a substituted or unsubstituted amino group,
V.sup.1 is a divalent organic linking group, preferably a C.sub.1-4
-alkylene or phenylene linking group; and a and b are each independently
1, 2 or 3 provided that a+b is not greater than 4.
A preferred triphenodioxazine group is of the Formula (8) or a salt
thereof:
##STR11##
wherein each Y.sup.1 independently is a covalent bond, C.sub.2-4
-alkylene, phenylene or sulphophenylene;
U is H or SO.sub.3 H;
W.sup.1 is an optionally substituted triazine group;
T.sup.1 and T.sup.2 are halo, especially chloro, C.sub.1-4 -alkyl, or
C.sub.1-4 -alkoxy; and each
R.sup.1 independently is as hereinbefore defined.
Each Y.sup.1 is preferably --C.sub.2 H.sub.4 -- or --C.sub.3 H.sub.6 --, U
is preferably SO.sub.3 H, and
T.sup.1 and T.sup.2 are preferably Cl, methyl or ethyl.
W.sup.1 is preferably a triazine group having one or two a labile atoms or
groups.
A preferred formazan group is of the Formula (9) or a salt thereof:
##STR12##
wherein: X.sup.1 is H, SO.sub.3 H or Cl;
each p independently has a value of 0, 1 or 2; and
R.sup.1 is as hereinbefore defined;
provided that the formazan group has at least one, and preferably at least
two, sulpho groups.
It is preferred that each p has a value of 1.
Dyes according to the invention may be prepared by a process comprising
condensation of one or more reactive dyes having at least two reactive
groups with a polyamine, preferably in a liquid medium. It is preferred
that the condensation is performed at 10.degree. C. to 70.degree. C.,
especially 20 to 50.degree. C. more especially 20 to 40.degree. C. The
liquid medium is preferably an aqueous medium, especially water. The
condensation is preferably performed at a pH in the range 5.5 to 11,
preferably 5.5 to 9.5, more preferably 6 to 9. especially 7.5 to 8.5. It
is preferred to use an excess of the reactive dye, for example 3 to 5
moles of the reactive dye per mole of polyamine when the polyamine is
tris(aminoalkyl)amine, more preferably 2.5 to 3.5, especially about 3.
Examples of suitable polyamines which can be used in the process include
tris(2-aminoethyl)amine, diethylene triamine, dipropylene triamine,
triethylene tetramine, mono-N-(2-aminoethyl) dipropylene triamine,
N,N'-bis(3-aminopropyl)butylenediamine, mono-N-(2-hydroxyethyl)
triethylene tetramine, tetraethylene pentamine and pentaethylene hexamine.
Preferably the polyamine has a molecular weight below 599.
Although dye formulae have been shown in the form of their free acid in
this specification, the invention also includes dyes and processes using
dyes in the salt form, particularly their salts with alkali metals such as
the potassium, sodium, lithium or mixed sodium/lithium salt.
The process for coloration is preferably performed at a pH of 7 1 to 13,
more preferably 10 to 12. pH levels above 7 can be achieved by performing
the process for coloration in the presence of an acid-binding agent.
The substrate is preferably a natural and artificial textile materials
containing amino or hydroxyl groups, for example textile material such as
wool, silk, polyamides and modified polyacrylonitrile fibres, and more
preferably a cellulosic textile material, especially cotton. For this
purpose the dyes can be applied to the textile materials at a pH above 7
by, for example, exhaust dyeing, padding or printing. Textile materials
are coloured bright shades and possess good fastness to light and to wet
treatments such as washing.
The new dyes are particularly valuable for colouring cellulosic textile
materials. For this purpose the dyes are preferably applied to the
cellulosic textile material at a pH above 7 in conjunction with a
treatment with an acid-binding agent.
Preferred acid-binding agents include alkali metal carbonates,
bicarbonates, hydroxides, metasilicates and mixtures thereof, for example
sodium bicarbonate, sodium carbonate, sodium metasilicates, sodium
hydroxide and the corresponding potassium salts. The dyes benefit from
excellent build-up and high fixation.
The new dyes can be applied to textile materials containing amine groups,
such as wool and polyamide textile materials, from a mildly alkaline
dyebath. The dyeing process can be carried out at a constant or
substantially constant pH, that is to say the pH of the dyebath remains
constant or substantially constant during the dyeing process, or if
desired the pH of the dyebath can be altered at any stage of the dyeing
process.
The dyes may be in liquid or solid form, for example in granular or
powdered form.
The invention is illustrated but not limited by the following Examples in
which all parts and percentages are by weight unless stated otherwise.
EXAMPLE 1
Preparation of
##STR13##
Stage a)
1-hydroxy-2-(1,5-disulphonaphth-2-ylazo)-6-[N-(4,6-dichloro-s-triazin-2-yl)
methylamino]-naphthalene-3-sulphonic acid was prepared by coupling
diazotised 2-aminonaphthalene-1,5-disulphonic acid onto
N-acetyl-2-methylamino-5-hydroxynaphthalene-7-sulphonic acid, removing the
acetyl group by heating to 80.degree. C. in 2N sodium hydroxide solution
and reacting the resultant dyebase with cyanuric chloride at 0-5.degree.
C.
Stage b)
Tris(.beta.-aminoethyl)amine (1.246 g) was added to a stirred solution of
the product from stage a) (36 g. MI 1221) in water (250 ml). The mixture
was stirred at 50.degree. C., pH 8.5, for 2 hours, cooled and methylated
spirits was added slowly with stirring. The precipitated dye was collected
and dried to give the title product (23 g. MI 2914) having a .lambda.max
at 484 nm.
Stage c)--Dyeing
The title product was applied to cotton by exhaust dyeing in aqueous soda
ash and was found to have good build-up and high fixation efficiency.
EXAMPLE 2
Preparation of
##STR14##
Stage a)
2-1-sulphonaphthyl-2-azo)-8-(4,6-dichloro-s-triazin-2-ylamino)-1-hydroxy
naphthalene-3,6-disulphonic acid was prepared by condensing cyanuric
chloride with
1-hydroxy-2-(1-sulphonaphthyl-2-azo)-8-aminonaphthalene-3,6-disulphonic
acid at 0.5.degree. C. and pH6.
Stage b)
Tris(.beta.-aminoethyl)amine (0.684 g, 96% strength) was added to a stirred
solution of the product from stage a), (0.0148 m) in water (250 ml). The
mixture was stirred at 50.degree. C. and pH 8.5 to 5 hours. A further
portion of the product from stage a) (0.0029 mol) was added and the
mixture was stirred for a further 2 hours at 50.degree. C. The mixture was
allowed to cool to room temperature, salt solution (8% w/v) was added with
stirring and the resultant precipitate collected and dried to give the
title product (11.0 g, 76% strength) having a .lambda.max at 518 nm and
.epsilon.max of 102.166.
Stage c)--Dyeing
The title product was applied to cotton by exhaust dyeing in presence of
salt and soda ash and was found to have good build-up and fixation.
EXAMPLE 3
Preparation of
##STR15##
Stage a)
1-hydroxy-2-(2-sulpho-4-methyl phenyl
azo)-8-(4,6dichloro-s-triazin-2-ylamino)naphthalene-3,6-disulphonic acid
was prepared by coupling diazotised 2-amino-5-methylbenzene sulphonic acid
onto 1-hydroxy-8-(dichloro-s-triazinylamino) naphthalene-3,6-disulphonic
acid.
Stage b)
Tris(.beta.aminoethyl)amine (1.01 g) was added to a solution of the product
from stage a) (43 g, MI 1599) in water (300 ml). The mixture was stirred
at 50.degree. C. and pH 8.5 for 2 hours then allowed to cool to room
temperature. Methylated spirits was added slowly with stirring and the
resultant precipitate collected and dried to give the title product (30 g)
having a .lambda.max at 516 nm.
Stage c)--Dyeing
The title product was applied to cotton by exhaust dyeing in the presence
of salt and soda ash and was found to have good fixation efficiency.
EXAMPLE 4
Stage a)
The method of Example 2 was repeated except that in place is
tris-(.beta.-aminoethyl)amine there was used an equimolar amount of
diethylene thiamine. The resultant product had a .lambda.max at 518 nm.
Stage b)--Dyeing
The product from stage a) was applied to cotton at 90.degree. C. in the
presence of salt and soda ash and was found to have good build-up and
fixation efficiency.
EXAMPLE 5
The method of Example 3 was repeated except that in place is
tris-(.beta.-aminoethyl)amine there was used an equimolar amount of
diethylene triamine. The resultant product had a .lambda.max at 516 nm.
Stage b)--Dyeing
The product from stage a) was applied to cotton in presence of salt and
soda ash and was found to have good build up.
EXAMPLE 6
##STR16##
Stage a)
A solution of
1-hydroxy-6-[N-methyl-N-(dichloro-s-triazinyl)]-amino-2-[3-methyl-4-(2,5-d
isulphophenyl azo)phenyl azo] naphthalene-3-sulphonic acid (0.0248 mmol)
and tris(.beta.-aminoethylyamine (0.0083 mmol) was stirred at pH 8.5 and
45-50.degree. for 6 hours. On cooling, potassium chloride solution (7.5%
w/v) was added and the precipitate was collected and dried to give the
title product having a .lambda.max at 522 nm, .epsilon.max 128.000.
Stage b)
The product from stage a) was applied to cotton in presence of soda ash and
NaCl and was found to have good fixation and build-up.
EXAMPLE 7
Preparation of a reactive dye of the formula (10)
##STR17##
wherein p is 2 and D is a 1-hydroxy-2-(2'-sulphophenylazo)-3,6-disulpho
naphthyl-8-amino group.
Stage a)
Diethylene triamine (8.7 mmol) was added to a solution of
8-dichloro-s-triazinylamino-1-hydroxy-2(2'-sulphophenylazo)naphthalene-3,6
-disulphonic acid (27.3 mmol) in water (200 ml). The mixture was stirred at
50.degree. C. and pH 8.5 for 8 hours. On cooling the solution was added to
methylated spirits (1 litre) and the precipitated solid was collected and
dried to give the title product (7.8 mmol) having a .lambda.max at 506 nm.
Stage b)--Dyeing
The title product was applied to cotton by exhaust dyeing in presence of
NaCl and soda ash.
EXAMPLE 8
Preparation of a dye of formula (10) wherein p is 2 and D is of the
formula:
##STR18##
Stage a)
1-(4sulphophenyl)-3-carboxy-4-(2-sulpho-4-dichloro-s-triazinylamino-phenyla
zo) pyrazol-5-one was prepared by condensation of
1-(4-sulphophenyl)-3-carboxy-4-(4-amino-2-sulphophenyl azo) pyrazol-5-one
with cyanuric chloride at pH 6.5.
Stage b)
Diethylene triamine (8.3 mmol) was added to a solution of the product from
stage a) (26.3 mmol) in water (200 ml). After stirring for 4 hours at
50.degree. C. and pH 8.5 the mixture was added, with stirring, to
methylated spirits. The precipitate was filtered-off and dried to give the
title product (4.5 mmol) having a .lambda.max at 449 nm.
Stage c)--Dyeing
The title product was applied to cotton by exhaust dyeing in presence of
salt an soda ash and was found to have good build up and fixation.
EXAMPLE 9
Preparation of a dye of formula (10) wherein p is 2 and D is of the
formula:
##STR19##
Stage a)
N-(dichloro-s-triazinyl)-3-ureido-4(3,6,8-trisulpho naphthyl-2-azo) aniline
was prepared by condensation, at 0.degree. to 5.degree. and pH 6.5, of
cyanuric chloride with 3-ureido-4-(3,6,8-trisulphonaphthyl-2-azo) aniline.
Stage b)
Diethylenetriamine (5.4 mmol) was added to a solution of the product from
stage a) (16.2 mmol in water (200 ml). The mixture was stirred at
50.degree. C. and pH 8.5 for 15 hours. After cooling to room temperature
the mixture was added to methylated spirits (740p, 1 litre) and the
precipitated solid collected and dried to give the title product (4 mmol)
having a .lambda.max at 431 nm.
Stage c)
The title product was applied to cotton by exhaust dyeing in presence of
soda ash and NaCl and was found to have good fixation.
EXAMPLE 10
Stage a)
The method of Example 3, stage b), was followed except that in place of the
product from step a) there was used
1-hydroxy-2-(2'-sulpho-5'-acetylaminophenylazo)-8-(4,6-dichloro-s-triazin2
-ylamino) naphthalene-3,6-disulphonic acid. The resultant reactive dye had
a .lambda.max at 505 nm.
Stage b)--Dyeing
The title product was applied to cotton by exhaust dyeing in presence of
NaCl and soda ash and was found to have good fixation.
EXAMPLE 11
Preparation of a dye of Formula (10) wherein p is 2 and D is of the
formula:
##STR20##
The method of Example 7 was repeated except that in place of
8-dichloro-s-triazinylamino-1-hydroxy
2(2'-sulphophenylazo)naphthalene-3,6-disulphonic acid there was used
1-hydroxy-2-(phenylazo)-8-(4,6-dichloro-s-triazine-2-ylamino)naphthalene-3
,6-disulphonic acid.
The resultant dye had a .lambda.max at 509 nm and was found to have good
build-up and fixation when applied to cotton by exhaust dyeing.
EXAMPLE 12
Preparation of a dye of Formula (10) wherein p is 2 and D is of the
formula:
##STR21##
The method of Example 7 was repeated except that in place of
8-dichloro-s-triazinylamino-1-hydroxy
2(2'-sulphophenylazo)naphthalene-3,6-disulphonic acid there was used
6-(N-dichloro-s-triazinylmethylamino)-1-hydroxy-2-(1,5-disulphonaphthyl-2-
azo)naphthalene-3-sulphonic acid.
The resultant dye had a .lambda.max at 484 nm and was found to have good
build-up and fixation when applied to cotton by exhaust dyeing.
EXAMPLE 13
The method of Example 2 was repeated except that in place of tris
(.beta.-aminoethyl)amino there was used an equivalent amount of an amine
of the formula H.sub.2 N--(CH.sub.2).sub.6 --NH--(CH.sub.2).sub.6
--NH.sub.2.
The resultant dye had a .lambda.max at 516 nm and was found to have good
build-up and fixation when applied to cotton by exhaust dyeing.
EXAMPLE 14
Preparation of a Reactive Dye of the Formula (10) Wherein p is 6 and D is a
1-Hydroxy-2'-(2-Sulphophenylazo)-3,6-Disulphonaphthyl-8-Amino Group
The method of Example 7 was repeated except that in place of diethylene
triamine there was used an equivalent amount of an amine of the formula
H.sub.2 N(CH.sub.2).sub.6 NH(CH.sub.2).sub.6 NH.sub.2.
The resultant dye had a .lambda.max at 516 nm and was found to have good
build-up and fixation when applied to cotton by exhaust dyeing.
EXAMPLE 15
Preparation of a dye of the formula (11):
##STR22##
wherein x+y+z is from 5 to 6 and Q is of the formula (12):
##STR23##
A solution of 8-dichloro-s-triazinyl
amino-1-hydroxy-2-(1-sulphonaphth-2-ylazo) naphthalene-3,6-disulphonic
acid (MI 1705, 33 g) was mixed with Jeffamine.TM. T403 (from Texaco
Corporation) (MI 440, 0.0059 m) and the solution stirred at pH 8.5 and
60.degree. C. for 15 hours. After allowing to cool, salt (20% w/v) was
added to the stirred solution, the precipitated solid was collected,
desalinated (visking tubing) and reprecipitated with methylated spirits to
give the title product (11.0 g, Ml 3000) .lambda.max 523 nm, .epsilon.max
106000.
EXAMPLE 16
##STR24##
A solution of
1-hydroxy-2-(2-sulpho-4-methoxyphenylazo)-7-N-(4,6-dichloro-s-triazinyl)
methylaminonaphthalene-3-sulphonic acid (0.033 moles) was dissolved in
water at pH7. Tris (.beta.-aminoethyl)amine (1.46 g, 0.01 moles) was added
to the solution and the mixture was stirred at 50.degree. C. and pH 10 for
3 hours. The mixture was allowed to cool and screened to remove any
insoluble material. Salt (15% w/v) was added and the resulting precipitate
was collected and dried to give the title product as its sodium salt (14.3
g, MI 2000), having .lambda.max at 502 nm.
EXAMPLE 17
Preparation of
##STR25##
Stage (a)
Cyanuric chloride (6 g) dissolved In acetone was added to ice/water with
vigorous stirring followed by 2,4-diaminobenzene sulphonic acid. The
mixture was stirred at 0.degree. C. and pH3 for 1.5 hours, screened and
the pH adjusted to 2.0. 2N sodium nitrite solution (16.5 ml, 0.033 moles)
was added at 0.degree. C. and pH2. After 2 hours,
1-hydroxy-7-aminonaphthalene-3-sulphonic acid (0.03 moles) was added; the
mixture was stirred for 6 hours at 0.degree. C. and pH2 to give a solution
of
8-(2-sulpho-5-[dichloro-s-triazinylamino]phenylazo)-7-amino-1-hydroxynapht
halene3-sulphonic acid.
Stage b
Tris (.beta.-aminoethyl) amine (1.31 g) was added to the product of stage
a) and the mixture was stirred at 50.degree. C. and pH 9.5 for 4 hours.
After cooling to 20.degree. C. the mixture was screened and salt (20% w/v)
was added to the stirred filtrate. The sodium salt of the precipitated
title product was collected and dried.
EXAMPLE 18
##STR26##
Example 17 was repeated except that in place of the tris
(.beta.-aminoethyl)amine there was used diethylene triamine.
The title dye was obtained in a yield of 8.6 g, .lambda.max 536 mn.
The title dye may be applied to cotton by exhaust dyeing under alkaline
conditions.
EXAMPLE 19
##STR27##
A solution of 1-amino-4-(3'-dichloro-s-triazinylamino-4'-sulphophenylamino)
anthraquinone-2-sulphonic acid (0.03 moles) was dissolved in water. Tris
(.beta.-aminoethyl) amine (1.31 g, 0.009 moles) was added and the mixture
was heated to 50.degree. C. and stirred at pH 9.5 for 5 hours. The pH was
lowered to 6.5 and the mixture allowed to cool to room temperature. Salt
(20% w/v) was added with stirring and the resultant precipitate was
collected and dried to give the title product as its sodium salt (12.5 g).
The title dye had a .lambda.max at 580 mn.
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